T coopee



March 9 1926.

S. COOPER SHEET WINDING APPARATUS Original Filed NOV, 18. 1922 7 Sheets sheet 1 4d@ //r/o/v COOPER.

S.` `COOPER SHEET WINDING APPARATUS March 9 1926.

7 Sheets-Sheet 2 Original Filed Nov. 18. 1922 R ws WW w mw 5m w mw s k@ March 9 1926.

s. COOPER SHEET WINDING APPARATUS Original Filed Nov. 18. 1922 I7 Sheets sheet 5 vwautoz l5/MON COOPER.

March 9 1926. 1,575,900

s. COOPER SHEET WINDING APPARATUS original Filed Nov- 18. 1922 7 shets-sheet 4 N//W No@ n '7 Sheets5heet 5 March 9 1926.

S. COOPER SHEET wINDING APPARATUS original Filed Nov. 18. 1922 l1/wanten@ /Mo/v-COQPER.

SHEET WINDI NG APPARATUS Original Filed NOV 18 1922 7 Sheets-Sheet 6 March 9 1926. 1,575,900

S. COOPER SHEET WINDING APPARATUS Original Filed Nov. 18. 1922 7 Sheets-5heet 7 '1U handling' nniohinea und l'nirtienlnrlj; to

SIIWION COOEER, GF B RGGKLYN, NEWT YREL OR Tr TVE MCCALL COMPANY, OF

Original application led November 18, l.` c

August 2'?, 1924. Sera 1.1, hun; ,miem-n.' F1o'. -fli1" :i detail vieu' or :1 tuoker blade; lle it known that l. Sino): Cooricn, a Nie 1 'hfeginentary detail illustrntuig 55 imon oil certain parts shown in .1 :'-z :1 eitiizeu o the llnited Stuten, und resident ol' another po;y the boronejl of Brooklin. eountj7 of Kings, Fit'. 5 and State-,of New York. have invented co- J (E en enlarged detail ot' the tueler tuin new and useful Improvements in Sheet-H lflz l.le shown in Fil-s 51ml 5 l'inding Apparatus, ol which the 'following i". T i" a1. longitndimrl section through i1 G0 a gpeggutiOu, wrapping' nrhor and u Certain ineeh- This invention relnteS in general to paper related thereto;

Q is :1 sectional View showing' the eollapsed position;

.ineens for YFolding` paper. The present i11- vention is u division ol 111)' applic-ation, ..1 Y 1x11 'lr-1QIYMHUU'N pien View oli the G5 21m-a NQ (301355), Nowmim- 13 192g urlroi' snowing Somewhat 111:1212111111intiezilli' 1111-11 QmnpnetV pueli'zigl'e. The nmehiup tmnul View on i111 enlarged Seule through T0 therein Shown includes n. nnre'uzine holdine' ib@ f'll'l 11i 1111211105 lndleuted by the Co2'- the numero-ue pieces eonslitutine; u complete l'fff'ihlili-li'lf WUUlPQW-l Wmo lines 0f Flsll ggjzirnvnt pattern, 21 feeder having' grippers f l l adapted lo piehr the topinoet sheets from 211111 1G :1re detalls showlngthe 11ml'iplieitgi o' piles of sheets in the 111z1g11 l 11il m Pm lfl Closed POSlOn in 1 ineens or moving' thele Sheets lo e; i Wil;

l#miti11g nie-.1115; goieue'e-.gine 11nd disen- 'e on the sheets and feed them to :1 device 'il-llll "ille li'bor driving' mechanism; 30 1.1 :ipted to Yl'old the elongated peel; at right llll'- lil fifi 21 (lfilll '.VVUJ @UWOU 0f lll@ :melee to the previously torni-ed folds So as lllm" (l'Vmlf Wcil'llgllv ogmth@ multinhcitv of Sheds QON- Relerrrng 1n detail to the d hunnen, the S5 nting' :1 pattern from tho machin@ in a nnielnne 111el11des n nnigazme comprising :1

l or el'leetinf; one el' the folding operations 'l l1@ 'ILYS nre Supernnposed und the 'lorthe Umm ifm t1;-, `15ymuf the Simms '\\'111' 'l e1'l; e of eheh offset nltflrrespeet to 90 Smil .gomma neighbor and @uppers o1` leerling fingers .hodiine t, oli he invention is il- Supported on :1 furi'iageCzire znrangedlo 11o 1 in Hw wmiypmlyingf (hmy'lpfm, 5 i pie the t pmost. sheet from each pile on the iruije :1nd Corry theni to 11n operative station l 1f: :1 trouwen-,e section through 1 'where the Carriage will dwell for :l Suiioient 95 lnueliine equipped with 11n; Y i111 length of time to permit the sheets to he `l sheet \'\,'indi11e' 11nd peek transferring engaged with my improved Sheet winding 45 111111: mechanism.

a n 11e-tail View: The carriage C is provided with a tucker if: i

15 .1 longitudinal Section of the blede which, when the carriage arrives :1t 100 inrwhine on line of Figo' l: u position adjacent with sheet Wrapping' o1' lig'. 5% is :1n enlarged detail illustruling Winding' arbor, is actuated to engage the 5U the shet feeding' grippers und ineunsfor sheets with the arbor. The carriage supenggag'ng the sheet-s 'l'ed therein7 with the ports; near its upper end, guides 174 and clamp ol in): improved sheet, Winding meel1- lili 1n which are shdably mounted bars 178 10" mism; ard 180 connectecl'at theirlower end by n f '.bar to which is secured a tucker fiade which blade is adapted to tuck or insert the several sheets between the jaws et the clamp 190 carried by the arbor ll. The blade 188 is normally held in the upper position shown in Figs. 2, 3 and t by springs 192 secured at one end to said blade and at their other ends to the guides 174- and 176. The upper ends of the bars 178 and 1S() are connected by a transverse rod 194: which rod is arranged to enter the forked ends 196 of a lever 198 when the carriage moves to its forward or lower position. The levers 198 are carried by a shaft 200 and i'ueans to presently be described are provided for rocking this shaft at the proper time to cause the tuclter blade 188 to insert the sheets between the clamp jaws of the arbor D.

The shaft 200 is supported in brackets 202 secured to the outside ol the inclined carriage tracks. At one end this shalt carries an arm 204C connected by a link 20G with the tree end ot a lever 208 pivoted at 210 to a suitable boss 'formed on the iframe 1l. The lever 2G53 has a lower arm 212 carrying a roller 21st adapted to be engaged by a cam projection 216 termed on the rear 'face of a disc 21S carried by the shaft 138. A spring 220 normally7 holds the arm 208 in position to permit the rod 194 to freely enter the 'lorked ends 196 of the levers 19S above reterred to, a suitable stop 222 beingI provided to accurately position Athe parts. The active portion of the cani 216 is oit' very short length so that the sheets are quickly moved into engagement with the jaws 190 ot the arbor D and the blade is quickly withdrawn trom said arbor. Comparison ot 3 and illustrates the movement ot the blade 188, but it is to be noted that in these Figures only two sheets are shown as beingl moved into engagement with the arbor7 but in practice it is to be understood hat a unich greater number ot sheets are moved into such engagement. only two sheets beine; shown in this instance because the small scale ot the drawing will not permit the clear showingv ot a great number. lt migiht be here statefl, however, that it is not absolutely necessary that cach and. every sheet he engaged by the arbor clamp as soule ot the smaller pieces ot short length can be supported between other sheets ot jre-.ter length.

"l` whirlingA arbor D as hereinbe'lore stated carries a clamp 190 between the jaws oi which the multiplicity ot superposed pattern sheets are inserted by the downward movement of the tueker blade 188.

` fitter such insertion the winding' arbor 'i ejiven a iiilurality or revolutions and then it collapsed to permit' the wrapped pack ot sheets to be readily stripped therefrom.

'the construction and operation ot the wind ing arbor will best be understood by com parison of Figs. 2 and 10 to 1G.

'.lhe arbor is supported on a spindle 26C having enlareed portions 268 and 270 on which are fitted lnrll-bearinfrs 272 and rthese bearings are carried bv a bracket 276 which is .secured by bolts 278 to the side trame 1t). On its outer end the spindle 25d has secured thereto a sprocket 28() which is connected by means ot a chain with a sprocket 23st (Fig. 1). The sprocket 28e loosely mounted on a shatt Zilli and is pro-- vided with a clutch tace 2&8 adapted to coact with a clutch 290 (Figs. l. and 18). which is rotatable with the shatt 288 and splined thereto so as to permit longitudinal nmvement. The shaitt 286 carries a spiral `near 292 which nieshes with a similar gear 294: carried by the main sha'tt 120, previously referred to. The shaft 120 1t will be remembered rotates continuously and in order to intermittently rotate the sheet windinpr arbor and permit it to dwell at predetermined intervals. llleans are provided to periodically shift the clutch 290 into and out ot engagement with the clutch 'tace ot' the sprocket 284. This clutch shitting mecha rie-1m incluses a lever 296 pivoted at 298 to a suitable bracket secured to the side traine 1l). This lever carries a pin one end arranged to engage an annular Lroove tormcd in the clutch 290, and at its opposite end, said lerer carries a pair ot opposed rollers which engage the opposite faces ot a ra sed cani ridge 30() formed on a circular disc 302 se eurer. to the shaft list. lt will be understood that the shal't 11-l is continuously driven 'from the shaft 120 by means ot the vorm and naar l'lt and 11G. The cam ridire 300 is so shaped that the trapping arbor will be periodically rotated so as to wrap the sheets 'thereon and it will cause the clutch 2G() to be disengaged at the proper times to stop the wrapping;` n'iovement so as to permit the sheets to be moved into engagement with the clamp 1910 ot the arbor while the same is at rest and will also permit the arbor to dwell, or remain stationary for a sufficient interval to permit the wrapped pack of sheets to be stripped 'from the arbor.

its shown best in Fins. l and T, the arbor l) is ot considerable leneth a .o is supported only at one end. lt is or small depth and as shown in cross section (Fin. lil) il is ot' mi 'num thickm Vthis proportirui pen mits oli wrappi U wide sheets into a coniparatively long narrow package as will be hereinafter more iulljv descr" d.

The main body il'iorton flotot' the arlair consists ot an elone'z-ited hard wood mruuher which is rigidly secured by i-ieans o'l bolts 30G and 3055 "s ectivelv to a head portion 3l() and brac 312 carried bj, said head portion. The arbor includes a collapsible eve lltl

section 3l-l of substantially the same length as the portion 301. rllhis section is pivoted on a stud 316 secured to the brackets 312. Springs 31T carried in suitable recesses termed in the section 3l-it bear against guide plates 318 secured to the underside ot the portion SO-il ot the arbor, and tend to move the sectionv Bill to its expanded position. as shown in Fig. 7.

For collapsing` the arbor a sliding member SLO is mounted adjacent the underside of l the portion and said member is formed with an upward extension having a cam slot formed therein which is adapted to co-act with a pin 326 secured to the upper end of a bracket 32S carried bv the collapsible section 3A. Comparison otl Fins. 7 and 8 will show that the movement ot the evtension S22 to the left from the position shown in Fig. 7 will cause the section 31st to be collapsed, that is to say, to be rocked on its pivot 316 to the position shown in Fig. 8. A spring 23230 tends to pull the member 320 to the right and a dog 332 is provided to move the member 320 to the lett. This do;` is pivoted at 32Bit in a slot 5586 formed in the head and a fiance 33S which is integral with the head 310. One end of the dog' engages a lip 840 formed at the let't extremity of the sliding' member 320. rlhe dog` is rocked when its linger 342 is struck by the upper` end ot a tappet 844-. to be presently described. rlhis tappet performs a number oi separate functions, one ot' which is to actuate the doe as above described to etlect the collapsing movement of the arbor7 another of which is to lock the arbor in its correct position to receive the sheets to be Yfolded and at the same time to ctl'ect the opening' movement ot' the arbor clamp. `When the tappet 34st is in its lower position as shown in Fig. 'i'. the arbor is free to rotate and none of the parts thereof are et`- tected by a tappet. However, when the tappet is lit'ted to the position shown in Figs. S and l0 its upper end will move into the slot formed in the flange and thereby positively prevent rotation ot' the arbor as loira' as the tappet is in this posiw tion. As the tappet moves up it rocks the dog 33") as above described thus collapsing the arbor and a pin 346 secured to the tappet engages the otliset end 348 ot a striker 350 which is slidable in a suitable guide C552 see cured to the head ot' the arbor. rl`he upper end ot' the striker 3.30 arranged to engage a pin or arm Sol which is secured to and extends laterally from a tube i356 termine' one part of the clamp 190 previously mentioned. This tube extends the lull leneth ot the arbor' and is formed with a longitudinal slot 358 through which the pattern sheets are adapted to be inserted by the tucker blade 188. The tube 356 is prevented from moving en alwse and its turning increment is also limited by a pin 352 secured thereto which projects into a slot formed in a curved plate S tixed to the arbor head as shown in Fig. ll. Side plates 360 and S62 ot' substantially the same leneth as the tube Soil are secured to the body portion 304 of the a 'bor and the upper ends of these side plates are Ylormed to tit the cylindrical surface of the tube 356 and form sort of a bearing which permits the tube to rotate relatively to said plates. The opposed edges 364; and 366 of the plates 360 and 362 respectively are separated by such a transverse distance that the tucker blade 188 can insert the multiplicity ot' superposed sheets between said edn/'es and through the slot 35S in the tube 356. without binding' or tearing` the sheets. In other words the transverse width otthe slot between the edges 364 and BGG is much `greater than the combined thickness ot the inserted portions ot the sheets and the tucker blade. Fig. l0 shows the tucker blade in the act ot' inserting; two snperposed sheets into engagement. with the clamp. It is to be understood, however. that a greater mnnber of sheets are inserted by the tucker blade. only two beine; shown because of the ditticulty 01"' .illustrating a `great number ot sheets which are only actually a 'few thousandths of an inch in thickness.

The closing movement ot the clamp 19t) effected by a spring one end o't which is secured to the arm Sal carried by the tube which constitutes the moving part ol the clamp. The other end of the spring;l is anchored to a pin 370 carried by the flange 33S of the arbor head. As thus arranged it. will be appreciated that the closing` movement ot' the clamp is etliected by the springT which turns the tube S55 on its axis thereby pinchingT the inserted sheets between one wall ot the slot 358 and the edge 366 ot the plate 362-. The opening' movement o'l the clamp is ettected when the tappet $244 moves up and lifts the slide 350 a sutticient distance to engage and rock the arm 354 carried by the tube 356.

The mechanism for actuating' the tappet 3 -t is best shown in Fie'. 1T and includes a rocker arm 372 carried on a stud 37s which is secured to a suitable boss on the 'trame l0. This rocker arm carries a roller ST6 on one end which co-acts with a cam STS secured to the shaft let previouslv reterred to. )n its opposite end the rocker arm has a linger 3S() adapted to engage a stud 382 secured to the tappet Sift. The tappet is mounted tor vertical movement in suitable nuide brackets Stil and 386 which are secured to the side frame l0 in any suitable manner. A sprinty 38S is secured near the lower end ot the tappet and tends to lift the same. The upper end o'lt this springT may be secured to any fixed member. As shown in the drawings. however., the upper en d of this spring is (ill conveniently anchored to a cross-shaft which has a compafativtly small angular movement. The cam 378 is provided With suitable dwell portions which are proportioned to periodically hold the tappet all in its extreme upper and loiver positions respectively.

From the above it Will be clear that when the tappet moves upwardly the clamp 190 will be opened so as to permitthe insertion of sheets by the tuclrer blade, and thel Wrapping arbor D Will be locked against rotation at this time due to the` :tact that the upper end ot the tappet is ivithin the slot 336 ot the arbor head. It is also clear that the movement or" the tappet Will rock the dog so to collapse the arbor. rit the time the sheets are being inserted in the clamp this collapsing movement is really not necessary. After the sheets have been insorted by the tucker blade and after the tuclrer blade has been lifted, the cam 37S causes the rocker 372 to depress the tappet and thereby unlock the arbor and permit the spring 368 to rock the clamp tube 356 from the position shown in Fig. l to the position shown in Fig. l2, thus securely gripping the multiplicity of sheets to be Wrapped. At this time the arbor is expanded, that is to say, the collapsible section 31e thereol' is in the position shown in Fig. 7. The clutch 290 will noiv be automatically shifted by the cam 300 so as to cause sprockets 284:, 280, and chain 282 to rapidly turn the arbor through a suliicient number of revolutions to Wrap the superposed sheets into a long,` narrou7 pack as shown in Figs. 9 and 13. During this Wrapping;` operation a tension web, to be presently described, is moved to such position that it prevents the free ends of the sheets from flying about in haphazard manner.

jitter the sheets have been completely wound `on the arbor the clutch 290 is disengaged by the cam B00 and lever Q96. At this time the cam 378 has turned to such position that the spring 388 is permitted to lit't the tappet 344; which results in positively locking the arbor against rotation, rocks the tube 356 to the position shoivn in Fig. l so that the pack can subsequently be stripped from the arbor, and the dog` 332 is rocked to retract the slide 320 thereby collapsing the arbor as shown in 8 and lll. This collapsing movement is important as it removes the tension from the closely wound pack of sheets carried by the arbor, and thus permits them to be readily stripped by the transferring mechanism, hereinafter described.

The tension Web-which prevents the free ends ot the sheets from flyingabout as the arbor is rotated consists yof a fabric belt 390 of approximately the same transverse Width as the length of the Winding arbor. One end of 4the tension webis secured to a cross rod 392 and the other end of the web carries a tension Weight in the form of a transverse bar 394i, as best shown in Fig. 2. rllhe bar 392 is supported at each end in a suitable loop formed in a iiexible cable 395, the lovver end oi which carries a Weight in the form of a cross bal1 398. Each cable 396 is trained over a guide sheave 400 near its lower end and over a similar sheave 402 near its upper end. he sheaves 400 and 4102 are loosely mounted on suitable cross-shafts as sho vn. The cable after passing around sheave 402 extends downwardly to the let't and the eritreine end thereof is secured to an arm elOel of a bell crank mounted on a shaft 406. This bell crank also is provided with a second arm 4:08 which is connected by a pitman 4:10 With an arm l2 which is pivoted on cross-rod 414-. The upper end oit this arm is offset as shown at -llt and is provided with a cross-bar 41S around which the tension web 390 passes. The arm i12 is in reality a bale-like member. the lovver ends ol which are pivo'ted on the rod Lil-'5; and the upper ends ol which are joined by the cross .men bei' 41S. The tension web 390 is also trained over a tilted cross rod #L secured to suitable brackets not shown. For controlling the movement ot the tension belt across ,the top of the Winding arbor a cani fl-Q .is provided on the sli-att 13S. This cam co-acts with a lever 42s secured to the shaft 406.

It Will be perceived vfrein the above description that when the cam revolves. the lever 42st Will more clockwise thus mov ingN the lever LlO- clockwise which will permit the Weight 398 to pull the cable $396 down so as to bring the cross-bar across the top ot the Windingl arbor substantially to the position shown in Fie'. 153. At the same time arm 408 and pitman al() will Withdraw the arm 412 so as to searing` the cross bar 418 to the lett troni the position shown in Fig 2 so as to permit the rotation oit the arbor Without interfering with said cross-bar. It is apparent that with the web 39() extending across the top oi the ai bor. when the same is rotated a gentle yieldinf.,r tension will be exerted on the sheets being' Wrapped. The amount ot this tension can be varied by va 'ving the weight ot' the respective tension vv -slits 39's and 3D3. 'in

a tension on the sheets web Sli() and crosslir guide Wha i the sh s th addition to oxcrtiiig' being wrapped the 392 also serve as a are being inserted into ,einrapgernent ivi the clamp 190 ot' the Wrapping' arbor. At

thistime the carriage ot course is in its lonfeanost position and the forward ends ot' the several sheets are prevented from falling down into the interior ot the machine atter they are released by the gripper lingers ly a sheet metal traygl which is supported 'on cross'rods i255 and L30. rEhe il ll upper ends of the released sheets will hang` over the crossbar 892 as shown in Fig. 3 and the extreme ends of some of the longer sheets will perhaps rest on the forward edges of the trays H. At this time the cross bar 892 and the cross member 418 will be substantially in vertical alignment and the portion of the tension web therebetween will naturally form a vertical guide wall which will assist the operation of neatly inserting' the sheets between the jaws of the clamp 190.

Pack transfer mohair/sm.Mfter the several sheets have been wrapped on the arbor and the same has been collapsed a pair of opposed stripping jaws are moved so as to engage the opposite sides of the wrapped pack, these jaws are then moved longitudinally so as to move the wrapped pack into the bite of a pair of opposed rollers` which will completely strip the pack from the collapsed arbor.

This mechanism is best shown in Figs. 1, 2, 9, 14, 17 and 18. The gripping jaws are formed of angle bars 432 and 434 secured to the free ends of arms 486 and 488 which are slidably mounted on cross-shafts 440 and 442. The jaws are provided with resilient pads 444 and 446 of rubber or other suitable .material which engage the opposite sides of the wrapped pack as shown in Figs. 9 and 14. The arms 486 and 488 are arranged in pairs7 that .is to say. there are. two arms 486 carried by the shaft 440 and two arms 488 carried by the shaft 442. Each pair of arms is connected at its upper end by the angle bar jaw 432 and 484 rcspectively. Near their lower ends the arms 486 are connected by a cross-rod 448 and the arms 438 are similarly connected by a cross rod 450. Rigidly secured to the shafts 440 and 442 respectively are short bifurcated arms 452 and 454 which slidably engage the cross-rods 448 and 450 carried respectively by the arms 486 and 488. This arrangement permits the arms 436 to partake of the rocking movement imparted by the shafts 440 and 442 and also permits said arms to be shifted longitudinally with respect to the shafts on which they are slidably mounted. The arms 486 and 488 as shown at the right in Fig. 1 are each provided with a lug 456 and each lug` is connected by a link 458 with a rocker arm 460 pivoted on a rock shaft 462 mounted in suitable bearings 464 and secured to the base of the machine. Connecting the two rocker arms 460 is a rod 466 to which one end of a pitman 468 ls connected. The other end of this pitman is pivotally secured at 470 (Fig. 1") to the arm 472 of a bell crank loosely mounted on a shaft 474 which is supported in suitable fixed bearings 47 6. The other arm 478 of the aforesaid bell crank, carries a cam roller 480 which rides in a cam groove 482 of a cam 484 secured. to a shaft 486. This sha-ft carries a worm gear 488 (Fig. 1) which meshes with a worm 490 secured to a cross shaft 492. On the forward end this shaft carries a niiter gear 494 which meshes with a similar gear 496 secured to the main drive shaft 120.

The shafts 440 and 442 have secured to their for fard Iends spur gears 498 and 500 respectively which mesh with one another as shown in Fig'. 17. The shaft 442 carries an arm 502 which is connected by a pitman 504, the lower end of which is secured to an arm 506 of a bell crank pivoted on av fixed stud :308. 'The lower arm 510 of this hell crank Aari-ies a cam roller 512 which co-acts with a `Q'roove 514 formed in av cam 516 secured to the shaft 114.

rlhe above connections provide means whereby the opposed jaws 432 and 434 move from the position shown in Fig'. 2 to that shown in Fig'. 14 so as to engage the wrapped pack of sheets wound on the arbor. This engaging' movement is effected by the cam 516 which through the bell crank arms 510 and 506. pitman :')0-1- and arm 502 rocks the shafts 440 and 442 in the proper direction to cause the closing movement of the stripper jaws. After the. jaws have engaged the wrapped pack the cam 482 comes in play causing the arm 472 of the bell crank carried by the shaft 474 to swing to the right and thereoy more the arms 436 and 488 longitudinally on their supporting shafts 440 and 44-2. This action moves the wrapped pack longitudinally with relation to the yarbor D a suilicicnt distance to bring" the forward end of said wrapped pack into the bite of a pair of opposed rollers 518 and 520 which are arranged to rotate on vertical axes located on opposite sides of the projected axis of rotation of the sheet wrapping' arbor D. To guide the pack into the bite of the rollers 518 and a 'flared sheet metal housing is provided which is secured to fined bracket 528 as shown in Fig. 1.

The rollers 518 and 520 exert sufficient pressure on the pz ck of sheets wrapped by the arbor D to crease the folds thereof. These rollers also feed the elongated wrapped pack of sheets to a4 winding` mechanism disclosed in my original application, Serial No. 601,858 above referred to, which is adapted to wind or wrap the pack of sheets in a direction at right angles to that in which it was formerly wrapped so to form a neat compact package.

Though l have described with `great part'cnlarity the certain specihc instrumentali- 'ties for winding sheets exerting' a tension while the latter are being wound and means for transferring, it is not to be construed that 1 am limited to the constructions and arrangements shown as various modifications may be made by those skilled in the fr (l arbor comprising a tit main lic-ly and a movable section l'orinin ydge thereoll and means tor moving; A l reatiyely tothe main bod),7 and a neftible tensio, mem

ber movable a 'ross the arbor.

3. in, folding machine, a collapsible zrbor coinprisine'a rotatably mounted lint body and a rigid section support-ml on a transversely extending pivot, means carried by said body iter transmittinev movement to said rigid section and means for simultaneously actuating the last named means and locking the arbor against ii'otation.

in a 'foldingmachine, an arbor adapted to simultaneously wap a multiplicity ot sheets into a pack, said arborl havin@l ,t clamp to hold the sheets While the arbor rotates, means for opening,- and closingl said clamp, means for moving the sheets into engagement with. the clamp, a me aber arranged to exert a tension on the sheets they are being Wrapped on the arbor and means ior periodically moving said tension l nieinber across one ,tace ot the arbor.

5. ln a folding); machine, an arbor adapted to simultaneously Wrap a multiplicity o't sheets into a pack, said arbor having' a clamp to hold the sheets While the arb r rotates, means tor opening; and closing' said clamp, means tor moving the sheets into engagement with the clamp, a flexible web tor ei;- erting` a tension on the sheets as they are being; Wrapped on the arbor Vand means ttor moving' and positioningl said Web so that it serves as a guide when the sheets are beingl moved into engagement with said clamp.

(l. ln a folding' machine, an arbor adapted to simultaneously Wrap a multiplicity ot sheets into al pack, said arbor havinga clamp to hold the sheets While the arbor rotates, means for opening and closing said clamp, means Jfor collapsing` said arbof and means engaging the opposite sides ot the Wrapped pack for stripping it iroin the arbor aitter the arbor is collapsed.

.7. i folding; machine including` an adapted to simultan; ty et sheets and a Wrap a nin tiplici llile belt arranger" t`A be periodically moved across the path ot the said arbor lor neventing the tree ends oiE the sheets trom 'dying' as the latter rotates.

8. il.. 'foldingv machine including an arbor, means 'for rotating the .eine to wrap a sheet thereon and a flexible belt 'for exertinga gentle tension on the sheet being,l Wrapped so as to prevent the tree ends thereoll Afrom flying and means for moving` one end oi' said helt acres, the 'tace ot the arbor.

il. ln a n'iachine oi? the class described a collapsible roary ii.'.appiiig device, antoi'natically controlled means for intermittently drii'ivig the latter and automatic means tor periodically lo hing and collapsing said Wrapping device.

l0. fr machine of the class described, ii clnding a rotary Wrapping device, antoniatic means iter moving the sheet across the top oi" said device, means an intermediate portion oit said sheet with said n' 'ripping device so that it is doubled over when the Wrapping device rotates.

ll. ln a machine ot the class des trib-ed, a nal. recary Wrapping dei/'icev` a clamp ior the sheets a one; one edge ot said A device, means 'ior holding the engrgagemcnt along,l the edge et said ping dci'ice and automatically actuated is tor ieriodicallif locking the n'rapiiing ries fic la. ln a machine ot' the class described a tlat rotary Wrappingh device, means for moy ing sheets into engagement with said W 'apping' deif'ice and means exbending` along` one edge ot said device for holding` the sheets in en` fent with it and means for simulianeoi ,c y locking said Wrapping device and openmasaid holding means.

13. loldingl machine having;- a trapping; arbor having` a clamp along one edge and means itor simultaneously pnllinfjf a multiplicity ot sheets tlatwise across the top ot said arbor and means for en.eacg'iiiigi an intermediate portion ot the sheets rith said clamn.

1"'. fr 'foldingv machine having a rotary wrapping element, means tor simultaneously eng Y the intermediate portion el a 1nnltiplici 5 ot sheets with said element so that the sheets are Wapped in double plies as said element rotates.

lo. il folding machine having; a Wrappinearbor and n'ieans :for simultaneously pulling;- a .multiplicity of sheets into a position in which their ends are on opposite sides et said arbor and means Jfor buckling said sheets at about the center et their length 'tor engagement withsaid arbor. i

16. It 'folding machine includiim` means ior supporting a. multiplicity ot paper sheets, means for simultaneously feeding a number ot said sheets to an operative station, a Wrapping,` arbor, neans for .moving` the central portion oi' the Yted sheets into engagement with said arbor and means :tor ro- :atingi said arbor.

l?. il. foldingl machine including means for feedingY a plurality ot sheets to an operatire station, a Witipping;l arbor in juxtaposition to said station, means iter buckling` said sheets to engage their cent 'al portions with .f-iad arbor, Y said means for rotatingl til) arbor to Wrap said sheets into a pack and means tor stripping the wrapped pack Yfrom said arbor.

18. ln a 'folding machine in combination ivith the mechanism ior simultaneously feeding a multiplicity' oit sheets to an operative station, a llat arbor carrying a clamp, means for moving said sheets across the thin edge of said flat arbor and a blade carried by said feeding mechanism for engaging the sheets ivith said clamp, means for periodieally rotating said arbor a plurality of revolutions` and a lock tor positively holding said arbor in such position that its flat suri'ace substantially perpendicular to the plane ot said sheets.

1D. In a folding machine, an arbor adapted to ivrap a multiplicity of sheets into a flat pack. said arbor having a clamp adapted to hold intermediate portions of the sheets as .the arbor rotates, means for periodically rotating said arbor to wrap the sheets thereon, means for moving the sheets across the face ot' said clamp and means for periodically locking the arbor and accurately holding the clamp in position to receive the sheets and means for engaging said Sheets with said clamp.

20. ln a folding machine, an arbor having a sheet-engagingclamp comprising a fixed jav: and a movable jaw, means tending to normally hold the movable aw in closed position, means for periodically rotating the arbor for several revolutions and stopping it with the clamp in the same position and mea-ns for simultaneously looking the arbor in its stopped position and opening said movable jaw.

ivith the clamp in the same position, means tor simultaneously locking the arbor in its stopped position and opening' said movable jaiv, means for simultaneously feeding a multiplicity ot sheets into juxtaposition to said arbor and means for moving the sheets into position to be engaged by said jaws.

In a folding machine, an arborhaving` a sheet engaging clamp comprising a tilted jaiv and a movable jaiv` means tending to normally hohl the movable jan' in closed position, a constantly rotating shaft, means for transmitting motion of said shaft to said arbor including a clutch, means for periodically shitting said clutch to interrupt the rotation ot' said arbor and a lock ttor positively stopping the arbor in a predetermimd position, and means operating in synchronism with said lock for opening said movable jaw.

Q3. In a folding machine, a' collapsible arbor adapted to ivrap sheets, a clamp having a movable jaw adapted to hold t-he sheets in engagement with the arbor for buckling the sheets for engagement with said jaw and means li'or synchronously collapsing said arbor, opening said clamp and locking thc arbor against rotation.

In witness whereof, I have hereunto signed my name.

SIMON COOPER. 

